Safety • Assembly • Operation • Tips & Techniques • Maintenance • Troubleshooting • Parts Lists • Warranty OPERATOR’S MANUAL Two-Stage Snow Thrower – Models 3AA & 3BA IMPORTANT READ SAFETY RULES AND INSTRUCTIONS CAREFULLY BEFORE OPERATION Warning: This unit is equipped with an internal combustion engine and should not be used on or near any unimproved forest-covered, brushcovered or grass-covered land unless the engine’s exhaust system is equipped with a spark arrester meeting applicable local or state la
This Operator’s Manual is an important part of your new snow thrower. It will help you assemble, prepare and maintain the unit for best performance. Please read and understand what it says. Table of Contents 1. 2. 3. 4. 5. Safety Labels ............................................... 3 Safe Operation Practices ............................ 4 Setting Up Your Snow Thrower ................... 6 Know Your Snow Thrower ........................... 8 Operating Your Snow Thrower .................... 9 6. 7. 8. 9.
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2 Safe Operation Practices WARNING This symbol points out important safety instructions which, if not followed, could endanger the personal safety and/or property of yourself and others. Read and follow all instructions in this manual before attempting to operate this machine. Failure to comply with these instructions may result in personal injury. When you see this symbol.
Operation Maintenance & Storage 1. Do not put hands or feet near rotating parts, in the auger/impeller housing or chute assembly. Contact with the rotating parts can amputate hands and feet. 2. The auger/impeller control lever is a safety device. Never bypass its operation. Doing so makes the machine unsafe and may cause personal injury. 3. The control levers must operate easily in both directions and automatically return to the disengaged position when released. 4.
3 Setup And Adjustment IMPORTANT: This unit is shipped with the engine full of oil. After assembly, see page 9 for fuel and oil details. Chute Handle Before Assembly WARNING: Disconnect the spark plug wire and Ground it against the engine to prevent unintended starting. 2 NOTE: Reference to right, left, front or rear of the unit is from the operating position unless otherwise stated. 1. Cut the cable tie that secures the upper handle to the chute assembly for shipping purposes.
Skid Shoe The space between the shave plate and the ground can be adjusted. Refer to Figure 7 for location of shave plate and skid shoes. High Position Middle Position Low Position For close snow removal, place skid shoes in the low position. When the area to be cleared is uneven, place skid shoes in the middle or high position. See Figure 4.
4 Know Your Snow Thrower WARNING: Be familiar with all the controls on the snow thrower and their proper operation. Know how to stop the machine and disengage them quickly. Compare Figure 7 with your equipment and follow description of controls, given below, to get familiar with their operation.
Before Starting Engine and free from rust or other foreign particles. Make sure to wipe off any spilled fuel before starting the engine. Engine Oil The engine is shipped with oil in it. Check the oil level before first use. 1. Stop engine and wait several minutes before checking oil level. Remove oil fill cap and dipstick. 2. Wipe dipstick clean, insert it into oil fill hole and tighten securely. 3. With engine on level ground, oil must be to FULL mark on dipstick. See Figure 8.
5 Operation Electric Starter(if equipped) Some models of the snow thrower may be equipped with an optional 120 volt A.C. electric starter. This electric starter, with a three-wire power cord and plug, is designed to operate on 120 volt AC household current. Follow the steps below to use the electric starter. Cold Start: 1. Determine whether your house wiring is a three-wire grounded system. Ask a licensed electrician if you are not certain.
Operating Tips WARNING: Do not over-tighten the cable. Over-tightening may prevent the auger from disengaging and compromise the safety of the snow thrower. 1. For most efficient snow removal, remove snow immediately after it falls. 2. Discharge snow downwind whenever possible. Slightly overlap each previous swath. 2. In a well-ventilated area, start the snow thrower engine as instructed earlier in this section under the heading Starting Engine. Make sure the throttle is set in the FAST position. 3.
6 Maintenance & Service WARNING Before lubricating, repairing, or inspecting, disengage all controls and stop engine. Wait until all moving parts have come to a complete stop. Disconnect the spark plug wire and ground it against the engine to prevent unintended starting. General Recommendations Shear Pin 1. Always observe safety rules when performing any maintenance. 2. The warranty on this snow thrower does not cover items that have been subjected to operator abuse or negligence.
Replacing Belts NOTE: There are two belts on this snow thrower: an auger belt and drive belt. It is recommended that both belts be replaced at the same time. 1. Remove the spark plug wire from spark plug and ground it against the engine to prevent accidental starting. 2. Drain gasoline from the gas tank, or place a piece of plastic sheet underneath the gas cap to prevent gasoline leakage. 3. Remove the self-tapping screw shown in Figure 11, and press the plastic tabs to release the belt cover.
7 Off-Season Storage If the snow thrower will not be used for 30 days or longer, or if it is the end of the snow season when the last possibility of snow is gone, the equipment needs to be stored properly. Follow storage instructions below to ensure top performance from the snow thrower for many more years. Preparing Engine NOTE: Refer to the engine manual for more detailed information on preparing the snow thrower engine for storage.
Problem Engine fails to start Possible Cause(s) 1. 2. 3. 4. 5. Fuel tank empty, or stale fuel Blocked fuel line Key not snapped in place Spark plug wire disconnected Faulty spark plug 6. Engine not primed 7. Engine flooded from excessive priming Engine runs erratic Engine overheats Loss of power Excessive vibration Unit fails to self-propel 1. Unit running on choke 2. Fuel line blocked, or stale fuel 1. 2. 3. 4. 5. Fill tank with clean fresh gasoline. Clean fuel line Insert key.
9 7 4 Part List: 8 3 Dual Stage Snow Thrower 6 2 9 5 12 10 1 13 14 22 32 16 33 47 11 18 15 34 38 For parts and/or accessories please call 1-800-800-7310, or 1-330-220-4683. 27 28 26 17 20 31 30 24 20 21 3 46 3 www.mtdproducts.
9 Part List: Dual Stage Snow Thrower REF NO. PART NUMBER 1 684-04037 2 DESCRIPTION Qty. REF NO. PART NUMBER DESCRIPTION Qty. Chute Assembly 1 24 726-04012 Push On Nut 2 710-04071 Carriage Bolt 5/16-18 x 1.
38 42 53 52 9 54 10 51 46 48 51 51 4 47 2 49 51 40 8 12 43 41 44 45 7 11 5 55 50 13 3 27 16 1 30 16 33 15 28 32 24 18 15 31 4 14 22 26 37 29 23 20 6 17 25 19 39 36 21 34 18 35
9 Part List: REF NO. PART NUMBER DESCRIPTION Qty. REF NO. PART NUMBER DESCRIPTION Qty. 1 710-0449 Carriage Screw 5/16-18 x 2.25” 2 28 741-0245 Hex Flange Bearing 2 2 710-0605 Mach. Screw 1/4-20 x 1.825” 1 29 741-04108 Hex Flange Bearing 2 3 710-1260A Screw, 5/16-18 x .
MANUFACTURER’S LIMITED WARRANTY FOR The limited warranty set forth below is given by MTD LLC with respect to new merchandise purchased and used in the United States, its possessions and territories. “MTD” warrants this product against defects in material and workmanship for a period of two (2) years commencing on the date of original purchase and will, at its option, repair or replace, free of charge, any part found to be defective in materials or workmanship.
